Warning codeA0504
Inverter Over-temperature code A0504 indicates the heat-sink temperature has exceeded warning level, causing reduced output. The manual's first action is: “Check if ambient temperature is within specified limits”
- Model
- Siemens MICROMASTER 420
- Display shows
- Inverter Over-temperature (A0504)
- Type
- Warning code
- Source
- Manual p. 72
What A0504 means
Inverter Over-temperature p. 72
Common causes
- Warning level of inverter heat-sink temperature (F0614) is exceeded, resulting in pulse frequency reduction and/or output frequency reduction (depending on parametrization in (P0610)) p. 72
What to do
- Check if ambient temperature is within specified limits p. 72
Before you service the product, read the safety instructions in the manual p. 6.
If A0504 is still not resolved
- Check if ambient temperature is within specified limits p. 72 “Check if ambient temperature is within specified limits”
This page summarises what the manufacturer’s manual says about A0504; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Siemens. Found a mistake? Report an error.